The First Age

Also known as the golden age, beginning after the creation of the reflected worlds.

The absence of demons in the reflected worlds allowed the humans to prosper with Peran's bloodline. Using magic, those "of the blood" discovered how to create elixir and chaos from matter, create vast cities, and learned how to make portals to other reflected worlds by using magic infused mirrors and crystals. This is how the demons learned of the other worlds, when the only world with the demons on it was stumbled upon.